Semaphore-indicator for electric signaling.



No. 703,957. Patented July I, 1902.

- H. GULLIVER. I

SEMAPHOBE INDICATOR FOB ELECTRIC SIGNALING.

(Application fi ed Apr. 23, 1902.)

(No Model.)

UNITED STATES PATENT OFFICE.

HARRY GULLIVER, OF SOUTH YARRA, NEAR MELBOURNE, VICTORIA,

AUSTRALIA, ASSIGNOR'OF ONE-HALF TO HENRY GREER ROBINSON OF MELBOURNE, VICTORIA, AUSTRALIA.

SEMAPHORE- -INDICATOR FOR'ELECTRIC SIGNALING.

SPECIFICATION forming part of Letters Patent No. 703,957, dated July 1, 1902. Application filed April 23, 1902. Serial No. 104,367. (No model.)

To all zbhom'it "may concern.-

Be it known that 'I, HAE Y GULLIVER, builder, 9. subject of the King of Great Britain, residing at No. 4.11 Chapel street, South Yarra, near Melbourne, in the State of Victoria and Commonwealth of Australia, have invented an Improved Semaphore-Indicator for Electric Signaling on Railways, Tramways, and the Like, of which the followingis a specification.

This invention relates to electric signaling on railways, tramways, and the like, in which communication is established either between fixed stations but more particularly between fixed signal boxes or cabins and the moving locomotive or tram-car. Its object has been to simplify the indicator mechanism and render same reliable and certain in action and to dispense with mechanical resetting or adjust-ment after having indicated a signal.

In order to facilitate a ready understanding of the invention, reference is now made to the drawings, in which I Figure 1 is a front elevation of the indicator with the door open and parts removed, and Fig. 2 is a perspective sketch of the actuating mechanism.

For the sake of illustration it will be presumedthat the indicator is fitted in the cab of a locomotive and that communication has been established with the signal-box by completing a circuit, say, by a brush on the locomotive contacting with a wire or conductor running parallel with the rails in manner known. 7

A B represent the terminals of the indicator-circuit, which is completed by wire C, re lay D, wires E E, electromagnet F, and wires G G to terminalB. The usual bell or alarm circuit H is also coupled up, as shown, communicating with the battery J.

K represents an oscillating horseshoe magnetic armature, the ends of which are approximately in line with the center of the core of the electromagnet F, said armature being swung slightly out of center, as shown, so that normally the semaphore Wlll be horizontal or at danger. The rocking bar L, carrying the armature K, is mounted in bearings M M. Attached to said rocking barLis an upwardly-extending lever-arm N, connected by a link 0 to a short crank-arm P, rigidly mounted on a rod or spindle Q, to which the semaphore R, having an adjustable counterweight S, is secured, a plate T being fixed behind said semaphore to form a suitable background.

The full lines in Fig. 1 show the mechanism in its normal or danger position, the semaphore being visible through the Window or view'hole U in the hinged door V.

When it is desired to give the all-right signal, the current to the terminals A Bis reversed by means of any convenient form It will be understoodthat should any breakage by accident take place in the circuit the semaphore will remain in its horizontal or danger position, notwithstanding the reversal of the switch, thus indicating at once that the mechanism is out of order. On the other hand, it is impossible to show the all-right signal except by reversing the switch. Thus the above-described indicator is reliable and certain in its action.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. A semaphore-indicator for electric signaling on railways, tramways and the like, consisting of an electromagnet, an oscillating horseshoe magnetic armature, a rocking bar carrying said armature, an upwardly-extending-lever-arm on said rocking bar, a rod or spindle having acrank-arm thereon, asemaphore carried thereby, and a link connecting the crank-arm on said rod or spindle with said lever-arm, substantially as described.

2. In indicators for electric signaling on railways, tramways and the like, an electromagnet, an oscillating horseshoe magnetic armature mounted slightly out of center, my hand in presence of two subscribing Witwith its legs on either side of said eleetromagnesses. net the ends bein approximately in line with the eenter of the core, a signal and means HARRY GULLIVER' 5 connected to said armature for actuating a Witnesses:

signal substantially as specified. EDWARD WATERS, J12,

In testimony whereof I have hereunto set EDWIN WILSON. 

